Solutions architect · AI agent integrator

Theophilus Rex Danquah

Cybersecurity, AI & multi-agent specialist.

10+ years shipping enterprise apps, cloud systems, and integrations with security in mind. Currently integrating AI agents at BKEY. Founder of Don't Forget Dad and HomeKare; co-founder of Apex Meta. Previously at Telecel Ghana and Vodafone Ghana.

  • 10+ years
  • Azure Architect Expert
  • Security+
  • Top Talent 3×
Theophilus Rex Danquah portrait

What I use

Skills & tools

  • FlutterFlutter
  • DartDart
  • TypeScriptTypeScript
  • Node.jsNode.js
  • Next.jsNext.js
  • NuxtNuxt
  • ReactReact
  • VueVue
  • PythonPython
  • JavaJava
  • FirebaseFirebase
  • SupabaseSupabase
  • PostgreSQLPostgreSQL
  • AzureAzure
  • AWSAWS
  • DockerDocker
  • OpenAIOpenAI
  • GitGit

Selected work

Things I worked on

SEO Audit Studio

Creator · Web, AI

Audit tool that scores a site for both classic SEO and GEO (how well LLM answer engines can read it). Point it at a domain and it finds the sitemap, crawls politely with Cheerio, then scores each page two ways: a deterministic pass against a 35-item SEO and GEO checklist, plus an AI pass, blended 60/40. The AI runs through a two-provider chain with automatic failover, so a page that one provider chokes on falls through to the next, and an audit still finishes on deterministic scoring if both are down. Results land in an interactive report with gauges, keyword tiers, and a per-audit Q&A chat. Work is tracked per company, runs in a background queue, and streams live progress over SSE.

  • Nuxt
  • Vue 3
  • TypeScript
  • Cheerio
  • Zod
  • SEO
  • GEO
  • SSE

iMirror

Creator · macOS, iOS

macOS app that mirrors a USB-connected iPhone to a window and controls it from the Mac while the phone stays physically usable (unlike Apple's iPhone Mirroring, which locks the device). Live video + audio, mp4 recording, full-res screenshots, and tap/drag/scroll/type/Home driven from the preview. The app itself is dependency-free Swift (AppKit, AVFoundation, CoreMediaIO, Network); control rides on source-built, osv-scanned go-ios + WebDriverAgent over loopback only. Self-manages its transport (no Xcode, sudo, or terminal) with auto-reconnect and a watchdog, and ships an MCP server so Claude can drive the device directly.

  • Swift
  • AppKit
  • AVFoundation
  • CoreMediaIO
  • WebDriverAgent
  • MCP
  • macOS

Firestore Query Studio

Creator · Desktop, AI

Local-first desktop tool for exploring Google Cloud Firestore with natural language queries. Describe what you're looking for in plain English; the app generates a structured query plan validated via Zod, executes it through the Firebase Admin SDK or emulator, and displays results in a sortable table with AI insights. Pluggable LLM backends (OpenAI-compatible HTTP or Cursor CLI), composite-index hints, schema inference, and a PWA shell alongside the Electron app.

  • Electron
  • TypeScript
  • React 19
  • Firebase
  • Zod
  • TanStack Table
  • OpenAI
  • Tailwind

ListenToMe

Creator · macOS, AI

Local-first push-to-talk voice dictation app for macOS. A global hotkey captures speech, transcribes it offline via a bundled whisper.cpp model, and pastes the cleaned result into any application. Optional AI cleanup runs through a local Claude API wrapper (no separate key required). Ships with a dynamic-island-style floating UI, custom dictionary, snippet expansion, voice commands, and a stats dashboard.

  • SwiftUI
  • AppKit
  • whisper.cpp
  • Claude API
  • macOS
  • On-Device ML

GrammaticallyCorrect

Creator · macOS, AI

Native macOS menu-bar app that catches spelling, grammar, and style issues in real time across every application. Inference runs entirely on-device via Llama 3.2 3B (4-bit quantised) on Apple's MLX framework; no network calls, no API keys. Text is captured through accessibility APIs with an AppleEvents fallback; a debounced pipeline keeps CPU usage low.

  • SwiftUI
  • MLX
  • Llama 3.2
  • macOS
  • Accessibility
  • On-Device ML

Berkins Home Care Services — Staff Portal

Engineer · Web, HIPAA

Internal staff portal for a US home-care agency, kept on its own domain so it fails apart from the public site. Caregivers check in and out and log shift notes, managers run intake assessments and assign visits, and admins handle users, reports, and CSV export. It handles PHI, so it was built HIPAA-first: a signed Google Cloud BAA, role-based access across three roles, and CI that lints for HIPAA rules and audit-log coverage on top of a Firestore security-rules test suite. Bilingual English and Spanish.

  • Next.js 16
  • React 19
  • Firebase
  • HIPAA
  • Zod
  • Tailwind
  • i18n

Berkins Home Care Services — Website

Engineer · Web, SEO

Bilingual marketing site for a home-care agency in Mayfield Heights, Ohio, built to replace an SEO-blind single-page app. 21 templates render statically across English and Spanish, which is 40+ pages a search engine can actually index. Two multi-step forms, care intake and caregiver application, save to Firestore first and then send a branded email through Resend, so a mail outage never drops a lead. A honeypot field and a Firestore sliding-window rate limiter keep out spam. Per-page JSON-LD, a generated sitemap, and WCAG-AA accessibility ship by default.

  • Next.js 16
  • React 19
  • Firebase
  • Resend
  • SEO
  • i18n
  • Framer Motion

Don't Forget Dad

Founder · Mobile, AI

Family medication-reminder app with shared caregiving, missed-dose visibility, and an in-app multi-agent assistant. Orchestrator routes to focused agents for meds, schedules, history, drug Q&A, label-photo parsing, journal, and weekly summaries. Gemini via Firebase AI with Ollama fallback; approvals on sensitive steps; agent calls logged.

  • Flutter
  • Firebase
  • Genkit
  • Gemini
  • Ollama
  • Cloud Functions

HomeKare

Founder · Mobile, Marketplace

On-demand babysitting & home-care marketplace for homeowners, vetted KareGivers, and agencies. Discovery, bookings, interviews, calendar, tasks, live chat, ratings, maps, and KareBot (OpenAI). Roles: homeowner, caregiver, agency, admin.

  • Flutter
  • Firebase
  • GetX
  • OpenAI

Apex Meta

Co-founder

Managed services and project IT consultancy. Implementation-partner work, steady-state ops, and clean go-live handover on long programmes.

  • Managed Services
  • Consulting
  • Delivery

Telecel Ghana Sales App

Engineer · Built

Official Flutter sales-force app for Telecel Ghana: FTTH and 5G acquisition, merchant and retail signup, trade itinerary and territory planning, tasks and material requests, OTP login with role-based access, maps, and device-integrity checks.

  • Flutter
  • Dart
  • RBAC
  • OTP Auth
  • Maps

GAPhealth

Engineer

Telehealth platform for patients, providers, health organisations, and researchers. Encrypted cloud records, mobile and web clients, hospital and clinic workflows, local payments, and researcher tooling.

  • Telehealth
  • Cloud
  • Mobile + Web
  • Payments

BMONI

Engineer

Multi-currency digital wallet with bank-like fintech services via licensed partners. KYC-heavy signup, tight auth, cross-border transfers, and regulated flows.

  • Fintech
  • Wallets
  • KYC
  • Cross-border

Vodafone Queue Management

Solutions Analyst

Led the implementation of a queue management system at Vodafone Ghana. Cut wait times and front-desk load; throughput went up. Saved £40,000 in operating cost.

  • Java
  • Flutter
  • Enterprise
  • Integration

Lyf Arena

Mobile developer

Wellness application for walks, events, routines, retreats, and group challenges. Apple/Android wellness SDKs integrated for step tracking and rewards.

  • Flutter
  • HealthKit
  • Rewards

Career

Experience

  1. 2025 - Present

    AI agent integrator BKEY

    • Wire AI agents into live products, developer workflows, and guardrails.
    • Multi-agent architectures (central router + task-specific agents), tool-calling patterns, and governed-AI behaviour in production.
  2. Nov 2023 - Present

    Accra, Ghana

    Solutions Specialist, Sales Support, Capability & Channel Telecel Ghana

    • Acting Operations Manager (1 month): oversaw solutions, trade channel, projects, and logistics.
    • Built Telecel Ghana's official Flutter sales app, covering FTTH/5G acquisition, merchant signup, territory planning, OTP + RBAC.
    • Drove reliability improvements across key systems, contributing to +30% MoM revenue growth.
    • Resolved cross-team integration failures spanning PaaS, SaaS, and COTS applications.
  3. Oct 2018 - Nov 2023

    Accra, Ghana

    Solutions Analyst Vodafone Ghana

    • Led the implementation of a queue management system, saving Vodafone Ghana £40,000.
    • Developed and maintained cross-platform mobile apps for iOS and Android with Flutter and Java.
    • Set up CI/CD pipelines and shaped app architecture across multiple mobile projects.
    • Tuned database queries and indexes for reporting and analytics workloads.

Education

  • MSc, Digital Forensics & Cyber SecurityGhana Institute of Management and Public Administration (GIMPA)Sept 2023 - Sept 2024
  • Bachelor of ScienceGhana Institute of Management and Public Administration (GIMPA)Sept 2013 - May 2017

Certifications

  • Microsoft Azure Solutions Architect Expert
  • Microsoft Azure Administrator Associate
  • Microsoft Azure Infrastructure Solutions
  • CompTIA Security+

Recognition

  • Vodafone Top Talent (2019-2021, 2022-2023)
  • Vodafone Top Performer (2021-2022, 2024-2025)
  • Vodacom Hackathon 2022

Contact

Let's talk

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